.tempBar{
    width: 100%; 
    height: 87px;
    background: url(../img/purchasing/temp.png) center 0 no-repeat;
    background-size: 100%;
}
.erwei{
    margin-top: 100px;
    padding-bottom: 100px;
}
.erwei .words{
    width: 700px;
    margin: 0 auto;
}
.erwei .words p{
    font-size: 20px;
    line-height: 40px;
}
.erwei span{
    display: block;
    margin: 0 auto;
    width: 402px;
    height: 402px;
    background: url(../img/purchasing/code.png) 0 0 no-repeat;
}